Dependence of Amorphous Formation Ability on Intrinsic Parameters in Dy-Gd-Co-Al Alloys

J Mater Sci Technol ›› 2009, Vol. 25 ›› Issue (05): 665-668.

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Dependence of Amorphous Formation Ability on Intrinsic Parameters in Dy-Gd-Co-Al Alloys

Lin Luo, Rui Tian, Xueshan Xiao

Institute of Materials, Shanghai University, Shanghai 200072, China

Received:2008-05-08 Revised:2008-09-22 Online:2009-09-28 Published:2009-10-10
Supported by:
the National Natural Science Foundation of China (No. 50571054).

Abstract

Abstract:

A series of Dy(Gd)-based bulk amorphous alloy rods were prepared by water-cooled copper mold method. Thermal stability and structure of Dy-Gd-Co-Al alloys were investigated by differential scanning calorimetry and X-ray diffraction, respectively. The results show that the Dy-Gd-Co-Al alloys have good glass-formation ability, and the Dy₃₁Gd₂₅Co₂₀Al₂₄ alloy can be readily cast into full glassy rods up to 5 mm in diameter. The glass-forming ability of multicomponent alloys was greatly dependent on their chemical interaction and the equivalent bond parameters among atoms such as equivalent electronegativity difference, equivalent atomic size parameter. The Dy (Gd)-based bulk amorphous alloys could be expected as potential functional materials.

Key words: Dy(Gd)-based, Glass forming ability, Intrinsic parameters

Lin Luo,Rui Tian,Xueshan Xiao. Dependence of Amorphous Formation Ability on Intrinsic Parameters in Dy-Gd-Co-Al Alloys[J]. J Mater Sci Technol, 2009, 25(05): 665-668.

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Dependence of Amorphous Formation Ability on Intrinsic Parameters in Dy-Gd-Co-Al Alloys

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